CN106846616B - A kind of dynamic correcting method and device of sensor - Google Patents
A kind of dynamic correcting method and device of sensor Download PDFInfo
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- CN106846616B CN106846616B CN201710072979.7A CN201710072979A CN106846616B CN 106846616 B CN106846616 B CN 106846616B CN 201710072979 A CN201710072979 A CN 201710072979A CN 106846616 B CN106846616 B CN 106846616B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
- G07D11/20—Controlling or monitoring the operation of devices; Data handling
- G07D11/22—Means for sensing or detection
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Abstract
The embodiment of the invention discloses a kind of dynamic correcting method of sensor and devices.The described method includes: obtaining the corresponding AD value of all the sensors in the first current output channels of constant-current source in real time；The target current grade of first current output channels is determined based on dichotomy, wherein the target current grade is to meet all AD values to be respectively less than the minimum current grade for setting corrected threshold.The effect for efficiently completing the dynamic calibration of sensor in constant current source current output channel may be implemented by using above-mentioned technical proposal in the embodiment of the present invention.
Description
Technical field
The present embodiments relate to cash transaction technical field more particularly to the dynamic correcting methods and dress of a kind of sensor
It sets.
Background technique
Cash transaction equipment can provide Self-Service for user, adapt to demand of the user to the life of convenient and efficient, institute
It is found broad application with cash transaction equipment.
In cash transaction equipment, usually determine that banknote separating device and bank note collect dress by the state of sensor
Set the residual condition of middle bank note, whether banknote path has bank note to be judged by sensor states by being also, so
Can the stability of sensor and service life directly influence cash transaction equipment and work normally.It is used in existing cash transaction equipment
The working principle of sensor be to be distributed multiple sensors in banknote path two sides, each sensor includes a transmitting terminal and one
A receiving end, transmitting terminal are arranged in the current output channels of constant-current source, pass through the size of current in control current output channels
(current class) controls the power for the optical signal that transmitting terminal issues；Receiving end is corresponding according to the strong and weak output for receiving optical signal
Sensors A D value.Wherein, the output valve of AD value, that is, analog-digital converter (Analog-to-Digital Converter, ADC), letter
Claim ADC value or AD value.Specifically, the optical signal received is stronger, the sensors A D value of output is just smaller, the optical signal received
Weaker, the sensors A D value of output is bigger, can determine that the bank note between current transmitting terminal and receiving end blocks feelings according to AD value
Condition.
In the operational process of equipment, since bank note and machinery can generate friction and bank note itself, there are the feelings of dust
Condition causes sensor surface that can have the phenomenon that dust accretions.This phenomenon not only will affect the sensitivity of sensor, Er Qiehui
Cause sensor to be mistaken for bank note in no bank note to block, needs that sensor is dynamically adjusted and corrected at this time.
Summary of the invention
The embodiment of the present invention provides the dynamic correcting method and device of a kind of sensor, may be implemented efficiently to complete constant-current source
The effect of the dynamic calibration of sensor in current output channels.
In a first aspect, the embodiment of the invention provides a kind of dynamic correcting methods of sensor, this method comprises:
The corresponding AD value of all the sensors in the first current output channels of constant-current source is obtained in real time；
The target current grade of first current output channels is determined based on dichotomy, wherein described target current etc.
Grade is to meet all AD values to be respectively less than the minimum current grade for setting corrected threshold；
The target current grade that first current output channels are determined based on dichotomy, comprising:
The initial current class to be adjusted of first current output channels is arranged in step a., wherein the electricity initially to be adjusted
Stream grade is N/2, and N is the total number of current class, N=2n, n is positive integer；
Step b. is obtained currently wait adjust the corresponding AD value of all the sensors under current class, and calculates current adjusting step,
Wherein, the current adjusting step is N/2(m+1), m is adjustment number；
Each AD value in acquired AD value is compared by step c. with setting corrected threshold respectively, any if it exists
AD value is greater than the setting corrected threshold, then increases current adjusting step on the basis of currently current class to be adjusted, obtain down
One current class to be adjusted；If all AD values are respectively less than the setting corrected threshold, on the basis of currently current class to be adjusted
It is upper to reduce current adjusting step, obtain next current class to be adjusted；
Circulation executes step b and step c until when meeting the first preset condition, executes step d；Wherein, described first is pre-
If condition includes: current adjusting step less than 1；
Each AD value in acquired AD value is compared by step d. with setting corrected threshold respectively, any if it exists
AD value is greater than the setting corrected threshold, then increases by 1 on the basis of currently current class to be adjusted, obtain target current grade；
If all AD values are respectively less than the setting corrected threshold, currently current class to be adjusted is determined as target current grade.
Further, further includes: during circulation executes step b and step c, when meeting the second preset condition,
Execute step e；Second preset condition include: currently current class to be adjusted and current adjusting step and be greater than setting highest
Threshold value, or, currently the difference of current class to be adjusted and current adjusting step is less than setting minimum threshold；
If step e. currently current class to be adjusted and current adjusting step and be greater than setting highest threshold value, will be described
Setting highest threshold value is determined as next current class to be adjusted, and returns to step b；If currently current class to be adjusted with work as
The difference of preceding adjusting step is less than setting minimum threshold, then the setting minimum threshold is determined as next electric current to be adjusted etc.
Grade.
Further, the constant-current source includes multiple current output channels, and the multiple current output channels are corresponding logical
Road ID be stored in correction queue in, it is described based on dichotomy determine first current output channels target current grade it
Afterwards, further includes:
The corresponding channel ID of first current output channels is removed into the correction queue, and stops being first electricity
It flows output channel and output electric current is provided.
Further, further includes:
When the channel ID quantity in the correction queue is 0, determine that the corresponding all electric current outputs of the constant-current source are logical
Channel correction finishes.
Second aspect, the embodiment of the invention also provides a kind of dynamic correction device of sensor, which includes:
AD value obtains module, and all the sensors in the first current output channels for obtaining constant-current source in real time are corresponding
AD value；
Target current level determination module, for determining the target current of first current output channels based on dichotomy
Grade, wherein the target current grade is to meet all AD values to be respectively less than the minimum current grade for setting corrected threshold；
The target current level determination module includes first object current class determination unit, the first object electric current
Level de-termination unit is specifically used for executing:
The initial current class to be adjusted of first current output channels is arranged in step a., wherein the electricity initially to be adjusted
Stream grade is N/2, and N is the total number of current class, N=2n, n is positive integer；
Step b. is obtained currently wait adjust the corresponding AD value of all the sensors under current class, and calculates current adjusting step,
Wherein, the current adjusting step is N/2(m+1), m is adjustment number；
Each AD value in acquired AD value is compared by step c. with setting corrected threshold respectively, any if it exists
AD value is greater than the setting corrected threshold, then increases current adjusting step on the basis of currently current class to be adjusted, obtain down
One current class to be adjusted；If all AD values are respectively less than the setting corrected threshold, on the basis of currently current class to be adjusted
It is upper to reduce current adjusting step, obtain next current class to be adjusted；
Circulation executes step b and step c until when meeting the first preset condition, executes step d；Wherein, described first is pre-
If condition includes: current adjusting step less than 1；
Each AD value in acquired AD value is compared by step d. with setting corrected threshold respectively, any if it exists
AD value is greater than the setting corrected threshold, then increases by 1 on the basis of currently current class to be adjusted, obtain target current grade；
If all AD values are respectively less than the setting corrected threshold, currently current class to be adjusted is determined as target current grade.
Further, the target current level determination module further includes the second target current level de-termination unit, described
Second target current level de-termination unit is specifically used for executing:
During circulation executes step b and step c, when meeting the second preset condition, step e is executed；Described
Two preset conditions include: currently current class to be adjusted and current adjusting step and be greater than setting highest threshold value, or, currently to
The difference of current class and current adjusting step is adjusted to be less than setting minimum threshold；
If step e. currently current class to be adjusted and current adjusting step and be greater than setting highest threshold value, will be described
Setting highest threshold value is determined as next current class to be adjusted, and returns to step b；If currently current class to be adjusted with work as
The difference of preceding adjusting step is less than setting minimum threshold, then the setting minimum threshold is determined as next electric current to be adjusted etc.
Grade.
Further, the constant-current source includes multiple current output channels, and the multiple current output channels are corresponding logical
Road ID is stored in correction queue, and described device further includes correction queue control module, and the correction queue control module is specific
For after the target current grade for determining first current output channels based on dichotomy:
The corresponding channel ID of first current output channels is removed into the correction queue, and stops being first electricity
It flows output channel and output electric current is provided.
Further, described device further include:
Current output channels correction terminates module, for determining institute when the channel ID quantity in the correction queue is 0
The corresponding all current output channels corrections of constant-current source are stated to finish.
The embodiment of the present invention is based on dichotomy to this by obtaining the AD value of sensor in constant current source current output channel
The electric current exported in current output channels adjusts, so that the AD value of all the sensors meets and is less than in the current output channels
Set corrected threshold requirement, solve in the prior art because between sensor transmitting terminal and receiving end due to chaff interferents such as dusts
The problem of blocking and influence the AD value of sensor, instrument or equipment is caused to can not work normally is realized and efficiently completes constant-current source
The effect of the dynamic calibration of sensor in current output channels.
Detailed description of the invention
Fig. 1 is the flow chart of the dynamic correcting method for the sensor that the embodiment of the present invention one provides；
Fig. 2 is the flow chart of the dynamic correcting method of sensor provided by Embodiment 2 of the present invention；
Fig. 3 is the flow chart of the dynamic correcting method for the sensor that the embodiment of the present invention three provides；
Fig. 4 is the structural schematic diagram of the dynamic correction device for the sensor that the embodiment of the present invention four provides；
Fig. 5 is a kind of operation principle schematic diagram for sensor that the embodiment of the present invention one provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
It should be mentioned that some exemplary embodiments are described as before exemplary embodiment is discussed in greater detail
The processing or method described as flow chart.Although each step is described as the processing of sequence by flow chart, many of these
Step can be implemented concurrently, concomitantly or simultaneously.In addition, the sequence of each step can be rearranged.When its operation
The processing can be terminated when completion, it is also possible to have the additional step being not included in attached drawing.The processing can be with
Corresponding to method, function, regulation, subroutine, subprogram etc..
Embodiment one
Fig. 1 is the flow chart of the dynamic correcting method for the sensor that the embodiment of the present invention one provides, and the present embodiment is applicable
Sensor calibration situation, the dynamic correction device of this method sensor provided by the embodiment of the present invention execute, should
Device can be realized by the mode of software and/or hardware, and can be integrated in automatic teller machine.
As shown in Figure 1, the dynamic correcting method of the sensor includes:
S110, the in real time corresponding AD value of all the sensors in the first current output channels of acquisition constant-current source.
Wherein, constant-current source can be a kind of control chip, the current value transmitted for controlling current output channels, and one
Constant-current source can control a current output channels, also can control multiple current output channels.First current output channels can
To be the physical channel for transmitting constant current under the control of constant-current source.It can connect multiple sensings in one current output channels
The transmitting terminal of device provides constant current for the transmitting terminal transmitting signal of sensor.
Sensor may include transmitting terminal and receiving end, and transmitting terminal can be connected with current output channels, export in electric current
Under the constant current that channel provides, emit optical signal.Wherein the emissive porwer of optical signal can be with the size of constant current at just
Proportionate relationship, for example, the electric current of constant current source current output channel is bigger, the intensity that transmitting terminal emits optical signal is bigger.It receives
End can be correspondingly arranged with transmitting terminal, and the optical signal that transmitting terminal emits can be converted into electric signal by receiving end, receiving end according to
The size of the light signal strength received forms corresponding electric signal, for example, the optical signal received is stronger, the electricity being converted into
Signal is bigger.Amplifying circuit can be set in receiving end, and the electric signal that will convert into amplifies, and then obtains voltage output
Value, wherein amplifying circuit can be realized by setting triode.Voltage output value is using biography available after analog-to-digital conversion
The AD value of sensor.
It is worth noting that can control and receive end voltage output value according to circuit design situation and be converted with by optical signal
At the variation incidence relation of electric signal be proportional relationship or inversely prroportional relationship, wherein proportional relationship refers to that voltage is defeated
The voltage value of outlet output is directly proportional to the optical signal that receiving end receives, and the optical signal that receiving end receives is stronger, and voltage is defeated
The voltage value of outlet output is bigger.The light that inversely prroportional relationship refers to that the voltage value of voltage output end output and receiving end receive is believed
It number is inversely proportional, the optical signal that receiving end receives is stronger, and the voltage value of voltage output end output is smaller.It is adopted in the embodiment of the present invention
The case where being the voltage output value of receiving end and light signal strength that receiving end receives inversely proportional relationship, this field
Technical staff by simple transformation circuit design it is conceivable that can realize other situations.
Illustratively, Fig. 5 is a kind of operation principle schematic diagram for sensor that the embodiment of the present invention one provides.Such as Fig. 5 institute
Showing, the transmitting terminal of sensor includes light emitting diode 30, and light emitting diode 30, first resistor 40 and constant-current source 10 are connected in series,
Light emitting diode 30 emits optical signal after being connected.Sensor receiving end is equipped with the element for converting optical signals to electric signal, such as
Obtained electric signal is input in the base stage of the triode 50 in sensor receiving end by photoelectric converter, triode 50, second
Resistance 70 and DC source 80 are connected in series, and can obtain the electricity of U (DC source voltage)-U (amplification voltage) in voltage output end 60
Output valve is pressed, then voltage output value progress analog-to-digital conversion can be obtained by the AD value of sensor receiving end.Wherein, work as triode
50 when being in off state, and voltage output value is U (DC source voltage), and with being gradually increased for U (amplification voltage), voltage is defeated
The voltage output value that outlet 60 obtains is gradually reduced, therefore the optical signal that the voltage output value of receiving end and receiving end receive is strong
Spend inversely proportional relationship.
S120, the target current grade that first current output channels are determined based on dichotomy, wherein the target electricity
Stream grade is to meet all AD values to be respectively less than the minimum current grade for setting corrected threshold.
Wherein, dichotomy is to halve a value interval, as needed, then will be obtained after bisection two
One in section is halved again, so is halved always, be stopped until obtaining a target value or target interval
Only.Current class can be the grade that constant-current source controls the size of electric current in current output channels by chip pin, for example,
0000 is expressed as 0 grade, and 0001 is expressed as 1 grade, and 0010 is expressed as 2 grades.The corresponding current value of each current class, example
As every two adjacent current grade current differential be 5mA when, 0000 is expressed as 0mA, and 0001 is expressed as 5mA, and 0010 is expressed as
10mA。
The target current grade is to meet all AD values to be respectively less than the minimum current grade for setting corrected threshold.Its
Described in corrected threshold can be understood as the highest AD value that sensor can work normally, when the AD value of sensor receiving end is greater than
When this corrected threshold, it is believed that the transmitting terminal of sensor and receiving end have object to block, the optical signal for causing transmitting terminal to emit
Can not receiving end receives or receiving end receives light signal strength be lower than a relatively low level.In conjunction with above-mentioned
When the AD value of sensor receiving end and the inversely proportional relationship of the incidence relation of light signal strength, when AD value is higher than corrected threshold, then
The optical signal for illustrating that sensor receiving end receives is weaker, if the objects such as no bank note by the transmitting terminal of sensor and
In the case where receiving end, then there are the chaff interferents shielding light such as more dust letters between sensor emission end and receiving end for explanation
Number transmission, need to be turned up the constant current of constant current source current output channel, so that the institute in same constant-current source output channel
The AD value for having the receiving end of sensor to obtain can meet the requirement less than corrected threshold.
Therefore, based on making the AD value of sensor all in constant current source current output channel be respectively less than the mesh of corrected threshold
, utilize the current class in dichotomy adjustment constant current source current output channel.During adjustment, if a certain current class
Under, there are the AD value of sensor be greater than corrected threshold the case where, then need to increase current class, if under a certain current class,
The case where being respectively less than corrected threshold there are the AD value of sensor, then need to reduce current class, until being adjusted to that all biographies can be made
The AD value of sensor is respectively less than the minimum current grade of corrected threshold, to realize that dynamic adjusts the purpose of sensor, finally with minimum
Current class work normally all the sensors can, reaching to improve energy utilization rate and extend sensor service life has
Beneficial effect.
The technical solution of the present embodiment by obtaining the AD value of sensor in constant current source current output channel, and is based on two
Point-score adjusts the electric current exported in the current output channels so that in the current output channels all the sensors AD value
Meet be less than setting corrected threshold requirement, solve in the prior art because between sensor transmitting terminal and receiving end due to dust
The problem of equal chaff interferents block and influence the AD value of sensor, and instrument or equipment is caused to can not work normally is realized efficiently complete
At the effect of the dynamic calibration of sensor in constant current source current output channel.
Embodiment two
Fig. 2 is the flow chart of the dynamic correcting method of sensor provided by Embodiment 2 of the present invention.The present embodiment is above-mentioned
On the basis of embodiment, S120 is advanced optimized.
As shown in Fig. 2, the dynamic correcting method of the sensor includes:
S201, the in real time corresponding AD value of all the sensors in the first current output channels of acquisition constant-current source.
The initial current class to be adjusted of S202, setting first current output channels, wherein the electric current initially to be adjusted
Grade is N/2, and N is the total number of current class, N=2n, n is positive integer.
The total number N of current class can be determined by constant-current source, since the total number of current class is the core by constant-current source
The level signal control of piece pin, so there is N=2n, n is positive integer.Illustratively, the total number of current class can be
64, correspondingly, initial current class to be adjusted is 32.
S203, it obtains currently wait adjust the corresponding AD value of all the sensors under current class, and calculates current adjusting step.
Wherein, current adjusting step is N/2(m+1), m is adjustment number.It is current to adjust as N=64 in conjunction with above-mentioned example
Step-length is 64/2(m+1).When m is 1, when as adjusting for the first time, current adjusting step is 16；When m is 2, as second
When adjustment, current adjusting step is 8；When m is 5, when as the 5th time adjustment, current adjusting step is 1.Sheet is being executed for the first time
When step, currently current class to be adjusted is initial current class to be adjusted.
S204, the size relation for judging current adjusting step Yu 1 execute S205 if current adjusting step is not less than 1；
If preceding adjusting step executes S216 less than 1.
Because current adjusting step cannot continue dichotomy to it if it is 1, thus current adjusting step whether
It is 1, or current adjusting step and 1 size relation, can be used as the first preset condition.
It is any if it exists with the presence or absence of the AD value for being greater than the setting corrected threshold in AD value acquired in S205, judgement
AD value is greater than the setting corrected threshold, then executes S206；If all AD values are respectively less than the setting corrected threshold, execute
S210。
Illustratively, as when currently electric current to be adjusted is 32 grade, judging, which whether there is in acquired AD value, is greater than institute
The AD value for stating setting corrected threshold then illustrates in current flow output channel if there is the AD value for being more than setting corrected threshold
The electric current in face is insufficient to allow all the sensors all to work normally, so needing to increase current class；If there is no more than setting
The AD value of corrected threshold then illustrates that the electric current above current flow output channel is enough to work normally all the sensors all, institute
To need to reduce current class, to obtain the minimum current class that all the sensors can be made all to work normally.
Currently whether current class to be adjusted is highest threshold value for S206, judgement, if so, executing S207；If it is not, then executing
S208。
Wherein, after highest threshold value refers to that the optical signal received is converted to electric signal by sensor receiving end, can make
Current class of the amplifying circuit work of receiving end in the current output channels corresponding to the highest AD value in amplification section, accordingly
, there may also be minimum thresholds.
S207, error information is returned.
When current class to be adjusted has been highest threshold value, still there is the AD value of sensor to be greater than setting corrected threshold
When, then return to error information.The error information may include the sensor coding that AD value is greater than the setting corrected threshold.
S208, increase current adjusting step on the basis of currently current class to be adjusted, obtain next electric current to be adjusted etc.
Grade.
If current current class to be adjusted is 32 grades, and when 32 grades are not the current classes of highest threshold value, because
In S205 it is determined that under current current class to be adjusted, however it remains the AD value of sensor is greater than the setting and corrects threshold
Value increases current step 16 then on the basis of currently current class to be adjusted, and obtaining next current class to be adjusted is 48.
S209, judgement currently current class to be adjusted and current adjusting step and whether be greater than setting highest threshold value, if
It is greater than, then executes S210, and returns and execute S203；If being not more than, returns and execute S203.
Wherein, the highest critical point of the linear amplification region of amplifying circuit where highest threshold value can be sensor receiving end
The current class of corresponding constant current source current output channel.In conjunction with above-mentioned example, when on the basis of currently current class to be adjusted
On, increase current step 16, obtain next when adjusting current class is 48, needs to judge that whether current class is 48 greater than setting
Determine highest threshold value, because if being greater than the setting highest threshold value, does not then anticipate with 48 for next current class to be measured
Justice, so being judged before as next current class to be measured.
S210, the setting highest threshold value is determined as next current class to be adjusted.
In conjunction with above-mentioned example, when setting highest threshold value as 46, currently current class to be adjusted and current adjustment are walked for judgement
It is long and 48 are greater than 46, then using 46 as next current class to be adjusted.
Currently whether current class to be adjusted is minimum threshold for S211, judgement, if so, executing S212；If it is not, then executing
S213。
Wherein, the minimum critical point of the linear amplification region of amplifying circuit where minimum threshold can be sensor receiving end
The current class of corresponding constant current source current output channel.
S212, determine that the minimum threshold is the target current grade.
Since judging result is that the AD value for being greater than the setting corrected threshold is not present in acquired AD value in S205,
So when judging not needing then to reduce current class again, directly with minimum door currently when adjusting current class as minimum threshold
Limit value is as target current grade.
S213, current adjusting step is reduced on the basis of currently current class to be adjusted, obtain next electric current to be adjusted etc.
Grade.
In conjunction with above-mentioned example, currently, when adjusting current class 32, the AD value of all the sensors is both less than the setting school
When the AD value of positive threshold value, then reduces current adjusting step 16 on the basis of currently current class 32 to be adjusted, obtain under 16 conducts
One current class to be adjusted.
Currently whether the difference of current class to be adjusted and current adjusting step is less than setting minimum threshold for S214, judgement, if
It is less than, then executes S215, and returns and execute S203；If being not less than, returns and execute S203.
S215, the setting minimum threshold is determined as next current class to be adjusted.
When currently whether the difference of current class to be adjusted and current adjusting step, will be described less than setting minimum threshold for judgement
Setting minimum threshold is determined as next current class to be adjusted.
S216, respectively by acquired AD value each AD value with setting corrected threshold be compared, it is any if it exists
AD value is greater than the setting corrected threshold, then increases by 1 on the basis of currently current class to be adjusted, obtain target current grade；
If all AD values are respectively less than the setting corrected threshold, currently current class to be adjusted is determined as target current grade.
Illustratively, if judge overcurrent grade for 16 before, the AD value of all the sensors is both less than the setting
Corrected threshold, when also judging overcurrent grade for 14, there are the AD values of sensor to be greater than the setting corrected threshold, and adjusts step
A length of 1, then judge that current class is 15 at present, due to next step adjusting step is computed should be for 0.5, less than 1, then direct end
Only cyclic process, when judge that current class is 15 at present, and working as current judging result is that there are the AD values of sensor greater than institute
When stating setting corrected threshold, determine that current class is 16 for target current grade；When current judging result is all the sensors
Then be 15 as target current grade using current class when AD value is respectively less than corrected threshold, and terminate sensor AD value it is dynamic
State correction.
The present embodiment on the basis of the above embodiment 1, gives and determines that the first electric current output is logical based on dichotomy
The specific implementation process of the target current grade in road can be quick, high by the method using dichotomy dynamic calibration sensor
The completion of effect saves time cost and labour cost to the dynamic calibration of sensor.
Embodiment three
Fig. 3 is the flow chart of the dynamic correcting method for the sensor that the embodiment of the present invention three provides.The present embodiment is above-mentioned
On the basis of each embodiment, advanced optimized.
As shown in figure 3, the dynamic correcting method of the sensor includes:
S310, the in real time corresponding AD value of all the sensors in the current flow output channel of acquisition constant-current source.Wherein, institute
Stating constant-current source includes multiple current output channels, and the corresponding channel ID of the multiple current output channels is stored in correction queue
In.
Wherein it is possible to multiple current output channels for constant-current source are arranged ID, and by multiple current output channels pair
The channel ID answered is stored in correction queue, and correcting ID all in queue is current output channels to be corrected.
S320, the target current grade that the current flow output channel is determined based on dichotomy, wherein the target electricity
Stream grade is to meet all AD values to be respectively less than the minimum current grade for setting corrected threshold.
S330, the corresponding channel ID of the current flow output channel is removed into the correction queue, and stops being described
Current flow output channel provides output electric current.
After completing correction to the current output channels, the ID of the current output channels is removed into correction queue, and stop
Continue to provide output electric current to the current output channels.
S340, when it is described correction queue in channel ID quantity be 0 when, determine that the corresponding all electric currents of the constant-current source are defeated
Channel correcting finishes out.
When correcting the current output channels ID quantity in queue is 0, it is determined that complete to export all electric currents of constant-current source
The correction in channel.
It is worth noting that sensor dynamic correcting method provided in this embodiment be can to the same current source or
All current output channels of multiple current sources carry out correction simultaneously, as soon as every corrected a channel, by channel removal team
Column, until when the current output channels ID quantity in correction queue is 0, that is, after the target current for determining each current output channels
Complete correction.
The present embodiment provides the side to multiple current output channels while correction on the basis of the various embodiments described above
Method can improve the dynamic school of the AD value of sensor to avoid to the repetition preparation before the correction of each current output channels
Positive efficiency.
Example IV
Fig. 4 is the structural schematic diagram of the dynamic correction device for the sensor that the embodiment of the present invention four provides.As shown in figure 4,
The dynamic correction device of the sensor, comprising:
AD value obtains module 410, all the sensors pair in the first current output channels for obtaining constant-current source in real time
The AD value answered；
Target current level determination module 420, for determining the target of first current output channels based on dichotomy
Current class, wherein the target current grade is to meet all AD values to be respectively less than the minimum current for setting corrected threshold
Grade.
The technical solution of the present embodiment by obtaining the AD value of sensor in constant current source current output channel, and is based on two
Point-score adjusts the electric current exported in the current output channels so that in the current output channels all the sensors AD value
Meet be less than setting corrected threshold requirement, solve in the prior art because between sensor transmitting terminal and receiving end due to dust
The problem of equal chaff interferents block and influence the AD value of sensor, and instrument or equipment is caused to can not work normally is realized efficiently complete
At the effect of the dynamic calibration of sensor in constant current source current output channel.
On the basis of the various embodiments described above, the target current level determination module 420 includes first object electric current etc.
Grade determination unit, the first object current class determination unit are specifically used for executing:
The initial current class to be adjusted of first current output channels is arranged in step a., wherein the electricity initially to be adjusted
Stream grade is N/2, and N is the total number of current class, N=2n, n is positive integer；
Step b. is obtained currently wait adjust the corresponding AD value of all the sensors under current class, and calculates current adjusting step,
Wherein, the current adjusting step is N/2(m+1), m is adjustment number；
Each AD value in acquired AD value is compared by step c. with setting corrected threshold respectively, any if it exists
AD value is greater than the setting corrected threshold, then increases current adjusting step on the basis of currently current class to be adjusted, obtain down
One current class to be adjusted；If all AD values are respectively less than the setting corrected threshold, on the basis of currently current class to be adjusted
It is upper to reduce current adjusting step, obtain next current class to be adjusted；
Circulation executes step b and step c until when meeting the first preset condition, executes step d；Wherein, described first is pre-
If condition includes: current adjusting step less than 1；
Each AD value in acquired AD value is compared by step d. with setting corrected threshold respectively, any if it exists
AD value is greater than the setting corrected threshold, then increases by 1 on the basis of currently current class to be adjusted, obtain target current grade；
If all AD values are respectively less than the setting corrected threshold, currently current class to be adjusted is determined as target current grade.
On the basis of the various embodiments described above, the target current level determination module 420 further includes the second target current
Level de-termination unit, the second target current level de-termination unit are specifically used for executing:
During circulation executes step b and step c, when meeting the second preset condition, step e is executed；Described
Two preset conditions include: currently current class to be adjusted and current adjusting step and be greater than setting highest threshold value, or, currently to
The difference of current class and current adjusting step is adjusted to be less than setting minimum threshold；
If step e. currently current class to be adjusted and current adjusting step and be greater than setting highest threshold value, will be described
Setting highest threshold value is determined as next current class to be adjusted, and returns to step b；If currently current class to be adjusted with work as
The difference of preceding adjusting step is less than setting minimum threshold, then the setting minimum threshold is determined as next electric current to be adjusted etc.
Grade.
On the basis of the various embodiments described above, the constant-current source includes multiple current output channels, and the multiple electric current is defeated
The corresponding channel ID in channel is stored in correction queue out, and described device further includes correction queue control module, the calibration force
Column control module is specifically used for after the target current grade for being determined first current output channels based on dichotomy:
The corresponding channel ID of first current output channels is removed into the correction queue, and stops being first electricity
It flows output channel and output electric current is provided.
On the basis of the various embodiments described above, described device further include:
Current output channels correction terminates module, for determining institute when the channel ID quantity in the correction queue is 0
The corresponding all current output channels corrections of constant-current source are stated to finish.
Method provided by any embodiment of the invention can be performed in the said goods, has the corresponding functional module of execution method
And beneficial effect.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (8)
1. a kind of dynamic correcting method of sensor characterized by comprising
The corresponding AD value of all the sensors in the first current output channels of constant-current source is obtained in real time；
The target current grade of first current output channels is determined based on dichotomy, wherein the target current grade is
Meet all AD values and is respectively less than the minimum current grade for setting corrected threshold；
The target current grade that first current output channels are determined based on dichotomy, comprising:
The initial current class to be adjusted of first current output channels is arranged in step a., wherein described electric current initially to be adjusted etc.
Grade is N/2, and N is the total number of current class, N=2n, n is positive integer；
Step b. is obtained currently wait adjust the corresponding AD value of all the sensors under current class, and calculates current adjusting step, wherein
The current adjusting step is N/2(m+1), m is adjustment number；
Each AD value in acquired AD value is compared by step c. with setting corrected threshold respectively, if it exists any AD value
Greater than the setting corrected threshold, then increase current adjusting step on the basis of currently current class to be adjusted, obtains next
Current class to be adjusted；If all AD values are respectively less than the setting corrected threshold, subtract on the basis of currently current class to be adjusted
Few current adjusting step, obtains next current class to be adjusted；
Circulation executes step b and step c until when meeting the first preset condition, executes step d；Wherein, the described first default item
Part includes: current adjusting step less than 1；
Each AD value in acquired AD value is compared by step d. with setting corrected threshold respectively, if it exists any AD value
Greater than the setting corrected threshold, then increase by 1 on the basis of currently current class to be adjusted, obtains target current grade；If institute
There is AD value to be respectively less than the setting corrected threshold, then currently current class to be adjusted is determined as target current grade.
2. the method according to claim 1, wherein further include: the process of step b and step c are executed in circulation
In, when meeting the second preset condition, execute step e；Second preset condition includes: current current class to be adjusted and current
Adjusting step and be greater than setting highest threshold value, or, currently the difference of current class to be adjusted and current adjusting step is less than setting
Minimum threshold；
If step e. currently current class to be adjusted and current adjusting step and be greater than setting highest threshold value, by the setting
Highest threshold value is determined as next current class to be adjusted, and returns to step b；If currently current class to be adjusted and current tune
The long difference of synchronizing is less than setting minimum threshold, then the setting minimum threshold is determined as next current class to be adjusted.
3. described the method according to claim 1, wherein the constant-current source includes multiple current output channels
The corresponding channel ID of multiple current output channels is stored in correction queue, determines first electric current based on dichotomy described
After the target current grade of output channel, further includes:
The corresponding channel ID of first current output channels is removed into the correction queue, and stops being that first electric current is defeated
Channel provides output electric current out.
4. according to the method described in claim 3, it is characterized by further comprising:
When the channel ID quantity in the correction queue is 0, the corresponding all current output channels schools of the constant-current source are determined
Just finish.
5. a kind of dynamic correction device of sensor characterized by comprising
AD value obtains module, the corresponding AD of all the sensors in the first current output channels for obtaining constant-current source in real time
Value；
Target current level determination module, for determining the target current etc. of first current output channels based on dichotomy
Grade, wherein the target current grade is to meet all AD values to be respectively less than the minimum current grade for setting corrected threshold；
The target current level determination module includes first object current class determination unit, the first object current class
Determination unit is specifically used for executing:
The initial current class to be adjusted of first current output channels is arranged in step a., wherein described electric current initially to be adjusted etc.
Grade is N/2, and N is the total number of current class, N=2n, n is positive integer；
Step b. is obtained currently wait adjust the corresponding AD value of all the sensors under current class, and calculates current adjusting step, wherein
The current adjusting step is N/2(m+1), m is adjustment number；
Each AD value in acquired AD value is compared by step c. with setting corrected threshold respectively, if it exists any AD value
Greater than the setting corrected threshold, then increase current adjusting step on the basis of currently current class to be adjusted, obtains next
Current class to be adjusted；If all AD values are respectively less than the setting corrected threshold, subtract on the basis of currently current class to be adjusted
Few current adjusting step, obtains next current class to be adjusted；
Circulation executes step b and step c until when meeting the first preset condition, executes step d；Wherein, the described first default item
Part includes: current adjusting step less than 1；
Each AD value in acquired AD value is compared by step d. with setting corrected threshold respectively, if it exists any AD value
Greater than the setting corrected threshold, then increase by 1 on the basis of currently current class to be adjusted, obtains target current grade；If institute
There is AD value to be respectively less than the setting corrected threshold, then currently current class to be adjusted is determined as target current grade.
6. device according to claim 5, which is characterized in that the target current level determination module further includes the second mesh
Current class determination unit is marked, the second target current level de-termination unit is specifically used for executing:
During circulation executes step b and step c, when meeting the second preset condition, step e is executed；Described second is pre-
If condition include: currently current class to be adjusted and current adjusting step and be greater than setting highest threshold value, or, currently electricity to be adjusted
The difference for flowing grade and current adjusting step is less than setting minimum threshold；
If step e. currently current class to be adjusted and current adjusting step and be greater than setting highest threshold value, by the setting
Highest threshold value is determined as next current class to be adjusted, and returns to step b；If currently current class to be adjusted and current tune
The long difference of synchronizing is less than setting minimum threshold, then the setting minimum threshold is determined as next current class to be adjusted.
7. device according to claim 5, which is characterized in that the constant-current source includes multiple current output channels, described
The corresponding channel ID of multiple current output channels is stored in correction queue, and described device further includes correction queue control module,
The correction queue control module is specifically used in the target electricity for being determined first current output channels based on dichotomy
After stream grade:
The corresponding channel ID of first current output channels is removed into the correction queue, and stops being that first electric current is defeated
Channel provides output electric current out.
8. device according to claim 7, which is characterized in that described device further include:
Current output channels correction terminates module, for determining the perseverance when the channel ID quantity in the correction queue is 0
The corresponding all current output channels corrections in stream source finish.
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